What word describes something that is filthy or in very poor condition?

The term "squalid" specifically refers to a state of extreme dirtiness, filth, and poor living conditions. It often conveys a sense of decay and neglect, implying that the environment or situation is not only unclean but also potentially unhealthy or distressing. This word paints a vivid picture of conditions that are well below acceptable standards, often associated with poverty or lack of care.

In contrast, the other words available all denote cleanliness or good condition. "Immaculate" indicates something that is perfectly clean and free from flaws; "pristine" suggests that an object is in its original condition, untouched by time or pollution; and "sanitary" means that something is clean and conducive to health. These definitions highlight stark differences in meaning, confirming that "squalid" is indeed the best fit for describing something filthy or in very poor condition.